Week14 ㄎㄎㄎㄎㄎㄎㄎㄎㄎㄎㄎㄎ

 week14 畫圖&滑鼠

14_1(畫線下降)

//week14_01_draw_lines_mouse

void setup(){

  size(500,500);

}

int x =-1,y = -1;

void draw(){

  if(x != -1){

    ellipse(x,y,1,1);

    y++;

  }

}

void mouseDragged(){

  if(mouseButton == LEFT)line(mouseX,mouseY,pmouseX,pmouseY);

  if(mouseButton == LEFT){

    x = mouseX;

    y = mouseY;

  }

}

14_2(彩線)

//week14_02_many_xy_Pixels

void setup(){

  size(500,500);

  background(255);

}

void draw(){

  

}

void mouseDragged(){

  if(mouseButton == LEFT){

    line(mouseX,mouseY,pmouseX,pmouseY);

    loadPixels();

    println(pixels[0]);

    for(int i=0; i<width*height;i++){

      if(pixels[i] != -1) pixels[i] = color(random(255),random(255),random(255));

    }

  updatePixels();

  }

}

14_3(線接球)

//week14_03_draw_lines_rain_update

PImage img;

void setup() {

  size(500, 500);

  img = createImage(500, 500, RGB);

  img.loadPixels();

  for (int i=0; i<500*500; i++) img.pixels[i] = color(#FFFFF2);

  img.updatePixels();

}

int x = 250, y = 0;

void draw() {

  background(img);

  ellipse(x, y, 20, 20);

  if (y<498 && img.pixels[x+y*500] == -14) y++;

}

void mouseDragged() {

  background(img);

  line(mouseX, mouseY, pmouseX, pmouseY);

  loadPixels();

  img.loadPixels();

  for (int i=0; i<500*500; i++) img.pixels[i] = pixels[i];

  img.updatePixels();

  updatePixels();

}

14_4(生成球接)

//week14_04_draw_lines_rain_ArrayList

PImage img;

void setup() {

  size(500, 500);

  img = createImage(500, 500, RGB);

}

ArrayList<PVector> p = new ArrayList<PVector>();

void draw() {

  background(img);

  for (PVector pp : p) {

    ellipse(pp.x, pp.y, 20, 20);

    if (pp.y<498 && img.pixels[int(pp.x)+int(pp.y)*500] == -16777216) pp.y++;

  }

}

void mouseDragged() {

  background(img);

  stroke(random(255), random(255), random(255));

  line(mouseX, mouseY, pmouseX, pmouseY);

  loadPixels();

  img.loadPixels();

  for (int i=0; i<500*500; i++) img.pixels[i] = pixels[i];

  img.updatePixels();

  updatePixels();

  for (PVector pp : p) {

    ellipse(pp.x, pp.y, 20, 20);

  }

}

void mousePressed() {

  if (mouseButton==RIGHT) {

    p.add( new PVector(mouseX, mouseY));

  }

}

14_5(畫線填色(不能太大))

//week14_05_drawline_fillcolor

void setup() {

  size(500, 500);

  background(#FFFFF2);

}

void draw() {

  if (mousePressed && mouseButton == LEFT) line(mouseX, mouseY, pmouseX, pmouseY);

  if (mousePressed && mouseButton == RIGHT) {

    loadPixels();

    color c1 = pixels[mouseX+mouseY*500];

    color c2 = color(random(255), random(255), random(255));

    if (c1!=c2) myFloodFill(mouseX, mouseY, c1, c2);

    updatePixels();

  }

}

boolean isOK(int x, int y, color c1) {

  if (x<0 || y<0 || x>=500 || y>=500) return false;

  if (pixels[x+y*500] != c1) return false;

  return true;

}

void myFloodFill(int x, int y, color c1, color c2) {

  pixels[x+y*500] = c2;

  if (isOK(x+1, y, c1)) myFloodFill(x+1, y, c1, c2);

  if (isOK(x-1, y, c1)) myFloodFill(x-1, y, c1, c2);

  if (isOK(x, y+1, c1)) myFloodFill(x, y+1, c1, c2);

  if (isOK(x, y-1, c1)) myFloodFill(x, y-1, c1, c2);

}

14_6(滑鼠)

//week14_06_mouse

void setup() {

  size(500, 500);

  PImage img = loadImage("kitty.png");

  cursor(img);

}

void draw() {

  background(#FFFFF2);

}

14_7(滑鼠自動切換)

//week14_07_mouse_timechange

PImage img1,img2;

void setup() {

  size(500, 500);

  img1 = loadImage("kitty.png");

  img2 = loadImage("cute.png");

  cursor(img1);

}

void draw() {

  background(#FFFFF2);

  if(frameCount%120==0) cursor(img1);

  if(frameCount%120==60) cursor(img2);

}